[RegCNET] how to obtain total photosynthetic active radiation from CLM4.5 file

[‪Samy Rateb‬ ‪]

Hello RegCNET users,
I would like to know how to obtain total PAR (photosynthetic active radiation) from CLM4.5 file? since CLM4.5 file produces par_sun and par_shade so it total par is the sum of sun and shade or what? Because I want to verify the total against PAR from MERRA satellite data.
I appreciate your help. 

Regards
Samy
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